Question

In the given figure, a circle is touching a semi-circle at C and its diameter AB at 0. If AB = 28 cm, what is the radius of the inner circle ? ​

Answer 1

$ab = 28$

$ob = oa = 14$

$oc = 14.$

divide oc =14/2,radius of inner circle is 7

Answer 2

Answer:

AB = 28cm

AO = Half of AB,

= 28/2 = 14cm

ie,

AO = OB = 14cm

Then radius r = 14/2

=7cm